Watch pendant construction



June 1`4, 1932.

A. CHAPATTE WATCH PENDANT CONSTRUCTION Filed June 25, 1950 Patented June 14, 1932 UNITED STATES ALBERT CHAPATTE, F BRIGHTON BEACH, NEW YORK WATCH PENDANT CONSTRU CTION Application led June 25,

My invention relates to improved construction of the pendants of watches and it is my object to place the pendant, stem and crown directly on the movement instead of o partly on the movement and partly on the case or wholly on the case and to provide a moisture and dust proof connection between the movement and case where the stem passes through the case, as Well as to provide a long bearing surface for the stem so that it must be moved in a straight line in setting, as a result of which wear, breakage and rusting of the stem will be eliminated.

In the ordinary pocket watch the pendant,

winding stem and crown are parts of the case and the stem passes through the pendant so that it takes a long time for dust, dirt and moisture to pass through to the movement. In Wrist and strap watches the stem is part of the movement and the edges of the case are notched in the center to allow the stem to pass through and the crown is attached to the outer end of the stem, which is never properly fitted or adjusted to the case. This permits easy entrance of dust, dirt, moisture and perspiration and leads to early trouble with the movement since such watches are very small and have light main springs so that they are easily deranged. In addition the stem has no support and is easily bent and broken in winding or setting the watch, especially by pulling the stem to one side in setting.

My invention provides protection to the movement by sealing the opening in the movement and sealing the case edges through which the stem passes to the crown on the outside of the case.

I have shown a preferred form of my invention in the drawing which is on a greatly enlarged scale for clearness of illustration. Fig. l is a view, partly in section, of my improved pendant construction; Fig. 2 a view of the structure of Fig. 1 on the line 2 2 thereof; F ig. 3 a view of' the structure of Fig. ll on the line 3-3 thereof; and Fig. 4 a top view, partly in section of my pendant Construction.

Ordinarily a watch movement has two plates, 1 and 1 secured together and has a 1930. Serial N0. 463,752.

hole in the edge thereof through which the same time the. movement hole and the case from the inside while the lower face of the flange 5 seals the case from the outside. The upper face of the flange 5 carries a tubular extension 6 spaced slightly outside the bore of the tube 3. The winding crown 7 has an annular channel 8 cut therein which is a sliding fit on the tubular extension 6, the bottom of the crown bearing on the top surface of the flange 5 and tube 3. The stem proper 9 passes through the pendant tube 3 with a sliding fit and has a groove 10 cut therein which engages the setting lever 11 of the movement to swing it as the crown and stem are moved in or out, the tubular part of the pendant being cut away to enable s the lever l1 to engage the groove..

If desired the pendant may be made integral with the movement instead of being made separately and mounted thereon, or it may be made an integral part of one of the movement plates.

The. watch case generally has a front 12 and a back 13, notched in the usual manner and the movement is fitted to the case so that the edges of the case will enter the space between the flanges 4 and 5 which then extend over the edges of the case notches-in a close fit and effectually seal the opening, the presence of the oil used in lubricating the parts further sealing the openings.

1When the watch is wound the stem is supported by the tube wall over about four times the bearing length of present watch construction and it is not so easily bent or worn. The tube also acts as a guide when the crown is pulled out for setting the watch so that it moves in a straight line and cannot be benty sideways.

By my construction dirt, dust, moisture or perspiration cannot easily pass to the stem and thence to the movement by way of the pendant or pass between the oase and the pendant as the passages are all baed and sliding lits.

5 I claim:-

A pendant for Watches comprising a tubu* lar body partially cut out at its lower part to enable a setting lever to pass therethrough, a pair of spaced anges on the tubular body intermediate its length and above the eutout portion between which the notched edges of a Watch case are adapted to fit, the tubular body extending above the upper ange i said upward extension being of greater diameter than the lower portion of the tubular Y body, a stem passing through the tubular body provided with a groove adjacent the cut out portion of the tube and adapted to engage a setting lever, a crown on the upper end of said stein provided with an annular groove engaging the tubular upper portion of the body and lying againstthe upper flange both Within and Without the upper extension.

In testimony whereof I have affixed my signature.

ALBERT CHAPATTE. 

